Significance of a highly refractory source during subduction initiation to form the Izu-Bonin-Mariana Arc  

高度难熔源区在俯冲起始形成伊豆-小笠原-马里亚纳岛弧中的意义

作　　者：Scott A.Whattam Robert J.Stern 

机构地区：[1]Department of Geosciences,King Fahd University of Petroleum and Minerals,Dhahran 31261,Saudi Arabia [2]Department of Geosciences,University of Texas at Dallas,Richardson,TX 75083-0688,USA

出　　处：《Science Bulletin》2022年第2期119-121,M0003,共4页科学通报（英文版）

基　　金：contribution(#1673) of Department of Geosciences University of Texas at Dallas。

摘　　要：The ascendent theory that unifies the Earth Sciences is Plate Tectonics, a regime which is unique to Earth. Other convectively active, solid silicate bodies of our Solar System (Venus, Mars, and Io) are encased in a single deforming "lid";on these, multiple plates and hence plate motions do not exist [1]. As Earth’s tectonic plates are driven by the sinking of old and cold oceanic lithosphere at subduction zones, understanding how new subduction zones originate is vital for a complete plate tectonic theory. Proposed mechanisms of subduction initiation (SI) are controversial but can be either spontaneous, i.e., caused by forces originating at the SI site, or induced by ongoing plate motions [2].

关 键 词：EARTH TECTONIC SOLAR 

分 类 号：P736[天文地球—海洋地质] P542[天文地球—海洋科学]